<!DOCTYPE html>
<html>
    <head>
        <title>Example</title>
    </head>
    <body>
        <!-- Tab切换焦点, 改变默认顺序 -->
        <form>
            <label>Name: <input type="text" name="name" tabindex="1"></label>
            <label>City: <input type="text" name="city" tabindex="-1"></label>
            <label>Country: <input type="text" name="country" tabindex="2"></label>
            <input type="submit" tabindex="3"/>
        </form>
    </body>
</html>